521480 Joomla shopping cart RokQuickCart Modification

I found this kind of shopping cart [login to view URL] The only thing missing: Customer unable to choose between Paypal and Googlecheckout Can not add product category There is no WYSIWYG editor no product full description feature Other than that, this is the kind of shopping cart we want Customer does not need to enter their info in our website Here what we want: 1) I would like to have enlarge image and the full product description in ajax 2) Mod_product stroller . 3) Add Product Category Feature 4) Add Payment option for customer to choose, either Paypal or Googlecheckout payment, or can display both, Paypal and Googlecheckout buttons which ever possible 5) Add WYSIWYG editor Thank you